Machine of screen printing

FIELD: printing industry.

SUBSTANCE: invention relates to the field of printing. Machine of screen printing comprises device for removal of printing forms intended to remove printing form from form cylinder and to assemble printing form after connection of printing form, exposed to operation of printing forms making, to form cylinder for printing on sheet. Device to remove printing forms comprises section for storage intended to store printing form, closing element intended to close section for storage with the possibility of free opening and closing, and facility intended to block closing element in closed condition, at the same time device for removal of printing forms is arranged so that it may be extracted from screen printing machine body.

EFFECT: invention makes it possible to extract device for unloading of printing forms with simultaneous reliable preservation of secrecy.

8 dwg

 

Background of invention

The technical field to which the invention relates.

The present invention relates to a screen printing machine and, in particular, to a screen printing machine having the function of ensuring the confidentiality of used printing plates (stencil).

Description of the prior art,

In the machine screen printing printing form, is wound like a roll, pull, and content of the original manuscripts (the original) is transferred to the printing plate by thermal perforation (making printing plates) using a thermal head. Printing form obtained during the manufacture of printed forms, wrap-around plate cylinder (item to install screen-printed forms), and printing ink is fed to the perforated parts in printed form. Then, the printed sheet of paper pressed against the printing form so that the content of the printing plate is transferred to the sheet of printing paper. Printing plate after the printing process, that is, the used printing plate removed from the plate cylinder by means of a device for removing printing plates directly before performing the next process of manufacturing a printed form. Used printing plate is stored in the mailbox for remote printing plates or the like in the printing machine. the hen specified number of used printed forms will be collected, the printing plate is removed from the drawer for remote printing plates or the like to the outside of the printing machine and thrown in the garbage or the like.

However, since a printed form, used in screen printing machine, has the content of the original, transferred through the perforation, it is possible to read the content, even though the printing form is used. Therefore, despite the fact that the content of the printing form requires privacy, there is a possibility that will happen unfavorable leak classified information to a third party or someone similar, who will receive the used printing plate. Consequently, have been proposed various traditional screen printing machine having the function of maintaining confidentiality, which ensures the prevention of reading the content of the printed form.

As usual functions maintain confidentiality have been known the following methods. In accordance with one method (patent documents 1-3) printing plate is subjected to shrinkage or melted by heating so that the printed form of the state is unsuitable for reuse. In accordance with another method (patent documents 4 and 5) mask physically hurt through the sharp protrusion so, what printing form passes into a state of unfitness for reuse. In accordance with another method (patent document 6) perforated part is filled by coating resin on the surface of the printing form so that the printed form of the state is unsuitable for re-use.

In addition, it was known the following method. In accordance with this method (patent document 7) the door of the printing machine that hosts the mailbox for remote printing forms are closed so you can freely remove the used print form.

In the case of methods (patent documents 1-6), according to which for the used printing plates are processes such as heating, damage or the like, you need to develop a device for executing processes, and this naturally leads to an increase in size, the number of parts and the cost of printing machines in General.

On the other hand, in the case of method (patent document 7), whereby the printing machine door lock, there is a possibility to limit the size increases, the number of parts and cost, because it requires only the addition of the castle.

However, in the car stencil printing plate cylinder and a box for remote printing plates are usually located near other the other. Therefore, when there is a jam at the site of the plate cylinder, it is necessary to remove the drawer for remote printing plates of the printing machine to eliminate jamming. In addition, when the printing machine door is locked, you must unlock the door every time there is a jam. Therefore, there are problems associated with the fact that the elimination of stuttering becomes very complex, and functions of privacy can not be carried out during the elimination of the binding.

Patent document 1: Japan Patent No. 2828479;

Patent document 2: patent Laid publication of Japan No. 9-142001;

Patent document 3: Lined patent publication Japan No. 2002-86882;

Patent document 4: Lined patent publication Japan No. 6-40138;

Patent document 5: Lined patent publication Japan No. 2005-153474;

Patent document 6: Lined patent publication Japan No. 2003-136825;

Patent document 7: Lined publication of Japanese utility model applications No. 61-31763.

The purpose of the present invention is to develop a screen printing machine, in which at occurrence of clogging or the like of a device for removing printing plates can be easily removed from the printing machine in a state in which confidentiality is securely supported.

The essence is subramania

The present invention is characterized in that the machine screen printing, containing in its body a device for removing printing plates, designed for removing the used stencil from the element to set a screen printing of forms and collection of stencil device for removing the printed form contains a section for storage designed to store stencil, the closing element intended for closing section for storage with the possibility of opening and closing, and locking means designed to lock the closing element in the closed state, the device for removing printing plates made with the possibility of extracting it from the outside of the hull.

In accordance with the present invention the stencil cannot be removed from the device for removing printing plates by locking the closing member by the locking means, for example, even though a device for removing printing plates will be removed from the machine screen printing to eliminate clogging of the stencil element for installation of screen printing forms. That is, the device for removing printing plates can be removed from the machine screen printing in a state in which the function of maintaining confidentiality is performed. In addition, such an operation as trannie clogging or the like, can be easily performed because there is no need to lock the car door screen printing. In addition, the present invention never causes increases in size, the number of parts and cost of the entire printing machine, because confidentiality is maintained through simple means, such as locking the closing element.

Brief description of drawings

Figure 1 is a front view schematically showing the screen printing machine in accordance with one embodiment of the present invention;

figure 2 is a perspective view of the machine screen printing, if you look in the direction of arrow II (in the direction of the angled top right), shown in figure 1;

figure 3 is a schematic front view of a device for removing printed forms;

figure 4 is a perspective view of a device for removing printed forms;

figure 5 is a perspective view showing the locking means in an enlarged view;

6 is a front view schematically showing the screen printing machine in accordance with another embodiment of the present invention;

Fig.7 is a front view schematically showing the screen printing machine in accordance with one more is they are the embodiment of the present invention; and

Fig is a perspective view of the machine screen printing in accordance with another embodiment of the present invention.

Explanation of reference positions

10 - machine screen printing

16 is a device for removing printing plates

17 - corps

19 is a plate cylinder (item setup screen printed forms)

23 is a section for storing

24 - closing element

25 - locking tool

The best option of carrying out the invention

[Main design screen printing machine]

Figure 1 is a front view schematically showing the machine 10 screen printing in accordance with one embodiment of the present invention. Machine 10 screen printing executed with such a configuration that it comprises a device 11 for picking up images, the device 12 for the manufacture of printed forms printing device 13, the device 14 for feeding sheets, a device 15 for discharging sheets, the device 16 for removing printing plates and so forth in the housing 17 and the main body of the printing machine).

The device 11 to read image reads an original image (original manuscript), available on the stand for the original, and generates data about the image. The device 12 for the manufacture of printed forms printed pulls the form (Tr is faret) M, wound(-th) - like roll, and writes the data of the original image received by the device 11 to read image on a printing form M by thermal (heat) perforation through the use of a thermal head 18 for the manufacture of printed forms). Printing device 13, which is located next to the device 12 for the manufacture of printed forms, pulls one printing plate M, manufactured by the manufacture of printed forms, around a cylindrical plate cylinder 19 (item to install screen-printed forms) and delivers the printing ink to the printing form M, resulting in the printing sheet P printed paper supplied by a device 14 for feeding sheets.

The device 14 for feeding sheets retrieves the sheets P of the printing paper one by one from the foot of the sheets P of the printing paper stacked on top of each other in layers, moves the sheet through the use of the transporting cylinder or the like and delivers the sheet under the plate cylinder 19. The device 15 for discharging sheets removes the printed sheet P after printing with the plate cylinder (printing form M) and moves the sheet ejection tray 20 located outside of the printing machine. The device 16 for removing the printed forms, which is located near the printing device 13, relieves used. the Yu printing plate M in the printing machine with the plate cylinder 19 and provides for the collection and storage of the printing plate M by winding it around the core 21 for winding. This operation of removing the printing plate is usually performed to remove the printing plate M, used in the previous printing, the plate cylinder 19 immediately before the start of a new process of manufacturing a printed form.

Control means, which includes a CPU and memory, are working together on the management of each of these devices consistently based on the work of the input information entered by the operator. Arrow X1 in figure 1 shows the direction of movement of the printing form M

Print form M used in this embodiment, receive by laminating the film material of thermoplastic resin, which comprises, for example, the film material of the polyester resin film material of a polyethylene resin film material of perchlorovinyl resin or other polymeric film material and is permeable to ink the support element, such as Japanese paper, nonwoven fabric or the like. However, you can also use the printed form, made of a film material of thermoplastic resin.

Figure 2 is a perspective view showing the machine 10 screen printing, if you look in the direction of arrow II (in the direction of the angled top right), showing the Noah figure 1. Made with the free opening/closing door 22 is provided in the upper portion of the side surface of the housing 17 of the machine 10 screen printing, and the tray 20 of the device 15 for discharging sheets provided under the door 22. The device 16 to retrieve the printing plates mounted on the inner side of the door 22. The device 16 to retrieve the printed forms are placed in the housing 17 by closing a door 22, and it can be withdrawn from the housing 17 through the opening 22.

When the device 16 for removing printing plates removed from the housing 17 by opening the door 22, the plate cylinder 19 will be open to influence from the side surface of the housing 17. Therefore, when a jam of the printing form M part of the plate cylinder 19, the jam clearance can be done easily by opening the door 22 without damage to the device 16 for removing the printed form.

[Construction of the device 16 for removing the printed form]

Figure 3 is a schematic front view of the device 16 for removing printing plates, while figure 4 is a perspective view of the device 16 for removing printing plates. The device 16 for removing the printed form includes a section 23 for storing intended for the storage of used printing plates, closing the th element 24, designed for closing section 23 for storage with the possibility of opening and closing, and locking means 25 that is designed for locking the closing element 24 in the closed state. In addition, section 23 for storing includes introductory rollers 26, the core 21 for winding, control means 27 for the core 21 for winding, the frame 28 of the device, and the like.

Introductory rollers 26 are designed for removal of the used printing plate M with the plate cylinder (1) and move it to the core 21 for winding. Introductory rollers 26 by a pair, consisting of upper and lower rollers, provided with located ahead along the side of the frame 28 of the device in the direction X1 move. The upper and lower introductory rollers 26 hold the used printing plate M between them and rotate in the direction of the arrow b to move the used printing plate M to the side of the core 21 for winding. Upper introductory roller 26 is provided on the same axis as "importing" roller 29 having many blades passing in the radial direction.

As shown in figure 4, the core 21 for winding includes a flange portion 31, which acts in the radial direction to the outside in a place that is closer to one end portion of a cylindrical rod 30 of the core, and plays with the form, this thesis is in. When the flange portion 31 serving as a boundary, the longer side of the rod 30 of the core serves as a part 32 for winding intended for winding the printing plate M, while the shorter side is used as a handle 33 for core 21 for winding.

As shown in figure 3, the abutment means 27 has a construction in which a set of reference tapes 34A-34C are used to support the core 21 for winding. The abutment means 27 includes many supporting shafts 35A-E (five shafts in the example shown in the drawing), arranged so that they surround the core 21 for winding, bearing pulleys 36A-E attached to each of the support shafts 35A-E, and a set of supporting belts 34A-34C, is wound around the anchor pulleys 36A-E. The bottom three control shaft 35C-E hold the side frame 28 of the device, while the top two supporting shaft 35A and 35V held to the side of the closing element 24.

Anchor tape 34A-34C include tape 34A, which is wound over a three-bearing pulleys 36A, 36V and E, the tape 34 is wound on top of the two support pulleys 36C and 36D, and the tape 34 is wound on top of the three-bearing pulleys 36V, E and 36D. Each of the supporting strips 34A-34C made of elastic, elastic tape, helical springs and the like. Designed for winding portion 32 of the core 21 for winding fixed due to hold the tion between the supporting strips 34A-34C. The outer diameter is increased by winding the printing plate M around the core 21 for winding. For example, when the outer diameter of the spooled printing plate M will reach the outside diameter of M1, which is shown in phantom line in figure 3, each of the supporting strips 34A-34C can be stretched to maintain state support. It should be noted that the supporting pulleys 36A-E and the reference tape 34A-34C are provided in many places in the axial direction so that the bearing for the core 21 for winding is provided in many places in the axial direction.

The core 21 for winding can be set in rotation by means of the section to bring in rotation, which are not shown. Section to bring into rotation transmits a rotational force generated by a motor or the like, a supporting shaft (for example, the support shaft 35C and E) support means 27. Thus section to bring in rotation can result in the movement of each of the supporting strips 34A-34C and cause rotation of the core 21 for winding held between the support strips 34A-34C.

Closing element 24 is located so that it closes the frame 28 of the device from above. One side (the side farther away in the course in the direction of the X1-moving the closing element 24 rests can be rotated on the supporting axis 37 on the frame 28 us the device. Therefore, through the implementation of the rotation of the closing element 24 up when using the reference axis 37 as the axis of rotation of the frame 28 of the device (section 23 to store) opens, and the core 21 for winding can be removed. On the contrary, through the implementation of the rotation of the closing element 24 down the frame 28 of the device is closed and the core 21 for winding cannot be extracted. Figure 4 shows the state in which the closing element 24 is open.

Figure 5 is a perspective view showing the locking means 25 in the enlarged view. The locking means 25 has a locking mechanism 39, which is designed to lock the closing element 24 in the closed position, and the locking section 40 that is used for locking the closing element 24 by maintaining the state of the lock by the locking mechanism 39. Next to the locking mechanism 39 in the upper part of the frame 28 of the device (figure 3) integrated capture pin (capture element) 41, the grab hooks 42 (exciting element)designed for coupling with captured rod 41, and the lever 43 management designed to remove the grab hooks 42 from the captured rod 41 provided in the closing element 24.

The grab hooks 42 and the arm 43 of the control are made as one whole is e, and the middle part between the two elements is based can be rotated on the lower side of the closing element 24 through the installation axis 44. The grab hooks 42 are deflected in the direction of coupling with captured rod 41 (arrow C) by the deflecting element 45, such as a cylindrical coil spring or the like. The lever 43 is located so that it was open to influence from the rectangular holes 46, which is formed on the upper surface of the closing element 24. By pressing the lever 43 of the control in the direction of arrow d to rotate the lever 43 down the grab hooks 42 are rotated upward (in the direction opposite to the direction) around the mounting axis 44 and disconnected from the captured rod 41, causing the lock is released.

The locking section 40 is made with a configuration that provides the ability to rotate the rotatable by a key axis 48, which runs in a vertical direction, and rotation of the locking element 49, which is attached to the lower part of the rotatable by a key axis 48, together with the rotatable by a key axis 48 by inserting a key (not shown) into the hole 47 turnkey, made in the upper surface of the closing element 24, and rotation of the key.

the when the locking element 49 is in position, shown by the solid line in figure 5, the locking section 40 is in the unlocked condition. When the locking element 49 is in the position shown in phantom line, the locking section 40 is in the locked condition. In the locked state the locking element 49 is located below the arm 43 of the control, so that the rotation of the lever 43 control down controlled. Therefore, the grab hooks 42 cannot be removed from the captured rod 41, which is supported by blocked (locked) state the closing element 24.

When the closing element 24 is locked by the locking means 25, described above, used printing form M cannot be removed from the device 16 for removing printing plates, despite the fact that the door 22 is opened and the device 16 for removing printing plates removed from the housing 17, as shown in figure 2. Therefore, the printed form will not steal randomly, while the door 22 is opened.

When the number of printed forms M stored in the device 16 for removing the printed form, reaches the maximum value, the door 22 is opened, and the locking means 25 unlock for opening the closing element 24, as shown in figure 4.

Subsequently wound printing plate M is extracted from the frame 28 of the device with the core 21 for winding. EAP is the result of the printing plate M is removed from the core 21 for winding, and the process of maintaining confidentiality (heat or physical damage to the printing plate M or the like) perform the necessary way. Subsequently, the printing plate M is discarded. After that, the core 21 for winding again set in the frame 28 of the device, and closing element 24 is closed and locked in closed position by locking means 25.

Locking the closing element 24 can be performed not only when you are printing, requiring condentiality, but also when running normal printing. When you don't need the privacy, the closing element 24 can be performed as a non-locking.

[Another variant implementation]

The present invention is not limited to the embodiment described above, and can be made appropriate modifications and design changes. For example, the present invention can be implemented as follows.

(1) the Plate cylinder 19 of the machine 10 screen printing is not limited to the single cylinder type, in the embodiment described above and can be provided for multi-cylinder types, shown in Fig.6 and 7.

(2) As shown in Fig, the machine 10 screen printing can be performed with this configuration, which is made with the possibility of freedoms is of the first opening/closing door 22 is provided on the front side, and a device 16 for removing printing plates can be removed by pull-out of its outward position when the door 22 is open.

Machine screen printing, containing in its body a device for removing printing plates, designed to remove the used stencil element for installation of screen printing forms and to collect stencil
the device for removing the printed form contains:
section for storage designed to store stencil
the closing element intended for closing section for storage with the possibility of opening and closing; and
locking tool for locking the closing element in the closed state,
the device for removing printing plates made with the possibility of extracting it from the outside of the housing.



 

Same patents:

FIELD: printing industry.

SUBSTANCE: invention relates to the field of printing. Machine of screen printing comprises device for removal of printing forms intended to remove printing form from form cylinder and to assemble printing form after connection of printing form, exposed to operation of printing forms making, to form cylinder for printing on sheet. Device to remove printing forms comprises section for storage intended to store printing form, closing element intended to close section for storage with the possibility of free opening and closing, and facility intended to block closing element in closed condition, at the same time device for removal of printing forms is arranged so that it may be extracted from screen printing machine body.

EFFECT: invention makes it possible to extract device for unloading of printing forms with simultaneous reliable preservation of secrecy.

8 dwg

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